Table 2.

Evaluation of predicting fine-grained VO₂max in the present and the future with the Fenland II repeats cohort using covariates of Fenland I.

Outcomes	Evaluation Metrics [95% CI]			N (train+val/test set)
	R2	Corr	RMSE
Wearable Sensors + RHR + Anthro.
Current VO2max	0.652 [0.606–0.695]	0.815 [0.783–0.846]	2.959 [2.742–3.201]
Future VO2max	0.499 [0.431–0.55]	0.721 [0.67–0.759]	3.673 [3.421–3.916]	2675 (2140/535)
Delta (Current - Future)*	0.081 [0.02–0.078]	0.233 [0.159–0.307]	3.175 [2.923–3.41]

Dense model results. (*the Delta outcome is in a different unit and hence a direct comparison with raw VO₂max results might not apply).